The 1929 financial crisis revealed that when commercial banks sold speculative securities to retail depositors while holding those same securities on their balance sheets, they created structural conflicts of interest that legal separation alone could not resolve. The Glass-Steagall Act addressed this by mandating structural separation between commercial and investment banking functions. Today, BlackRock manages $11.5 trillion in assets and has become one of the three largest shareholders in most S&P 500 companies through passive index fund accumulation, voting shares at every shareholder meeting while simultaneously providing advisory services to those same corporations and managing risk models for external institutional clients. This creates a structurally equivalent conflict to the 1929 banks, where the same institution manages retail savings, exercises corporate governance, and executes central bank policy, raising fundamental questions about whether structural separation remains the appropriate solution when conflicts run through information rather than capital.
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BlackRock Is Doing Exactly What The Banks Did In 1929. The Final Asset Grab Has Begun
Added:October 29th, 1929.
The New York Stock Exchange, Broad Street. A 44-year-old bank clerk named Walter Simmons is on the phone. He has been on the phone for 6 hours. The calls are all the same. Clients want to sell everything.
Now, Walter works for National City Bank, the largest commercial bank in America. For the past decade, the bank has been selling stocks and bonds to ordinary Americans through its securities affiliate. The same stocks and bonds its own investment bankers underwrote. The same instruments whose risks its own analysts understood far better than any retail client ever could. The clients are now holding those instruments at a fraction of what they paid. They cannot get through to anyone who can actually stop the losses.
National City Bank had done something specific in the 1920s, something that looked at the time like brilliant financial innovation.
It had blurred the line between the institution that safeguarded ordinary people's deposits and the institution that sold those same people speculative securities at the peak of a market it knew better than they did. When the crash came, ordinary depositors lost their savings. National City absorbed what it could at distressed prices.
The Glass-Steagall Act was passed 4 years later specifically to prevent this from ever happening again.
Glass-Steagall was repealed in 1999.
BlackRock manages 11.5 trillion dollars today.
And the mechanism it has built is the 1929 structure updated for an era when you do not need to sell a single retail client a single stock to own everything they own.
Stay with me. To understand what the 1929 banks actually did and why BlackRock's position replicates it more completely than any institution since, you need to understand the specific conflict of interest that Glass-Steagall was designed to eliminate. Commercial banks in the 1920s held depositors' money. That money was supposed to be safe. It was supposed to sit in a vault, earn modest interest, and be available when depositors needed it. What actually happened was different. The same banks created securities affiliates. These affiliates underwrote stock and bond offerings, taking companies public, issuing corporate bonds, structuring financial instruments. They then sold those instruments to the same depositors whose money sat in the parent banks' vaults. The conflict was structural, not accidental.
The bank knew more about the quality of the securities it was selling than the clients buying them. The bank profited from both sides. It earned fees for underwriting. It earned commissions for selling. And when the securities declined, as many did before 1929 and all did after, the bank's balance sheet was protected by the regulatory capital and deposit base that retail clients had no equivalent protection behind.
The Senate's Pecora investigation of 1933 documented this in detail. National City Bank had sold its own clients securities it privately assessed as risky. It had lent depositor money to insiders to buy its own stock. It had created the appearance of sound investment while managing a system that concentrated gain at the top and distributed loss to the bottom.
Glass-Steagall ended it for 66 years.
Now here is BlackRock.
And the mechanism it operates is not metaphorically similar to 1929. It is structurally equivalent at a scale the 1929 banks never approached. BlackRock does not take deposits. It does not issue securities in the traditional sense. It manages money. Specifically, it manages money for the people who put their savings into index funds, ETFs, and pension arrangements that flow through BlackRock's platforms. Through its iShares ETF business, BlackRock has become, by pure mathematical accumulation, one of the three largest shareholders in the overwhelming majority of S&P 500 companies. Not because it chose those companies, because index funds buy the index. And when enough money flows into index funds, the fund manager becomes the largest owner of everything in the index.
This is the asset grab, not through purchase decisions, through structure. A retail investor who puts money into an S&P 500 index fund does not choose which companies to own. They do not choose how to vote those shares at shareholder meetings. They do not choose who sits on the boards of the companies their savings technically own. All of those decisions flow to BlackRock. Because BlackRock manages the fund, because BlackRock votes the shares. BlackRock votes the shares of Apple, of Microsoft, of ExxonMobil, of JP Morgan, of every major American corporation simultaneously.
With the accumulated voting weight of trillions of dollars in retail savings that flow through its index funds without the retail savers having any visibility into how those votes are being cast.
Now, here's the critical part.
The 1929 banks had a conflict of interest between their depositor function and their securities function.
Glass-Steagall eliminated the conflict by separating them. You could be a commercial bank or an investment bank, not both. BlackRock's conflict of interest exists between its index fund function, passively managing retail savings, and its advisory function.
The same institution that votes the shares of Apple also sells advisory services to Apple.
The same institution that technically owns a piece of every major corporation also takes fees from those corporations for financial advice, risk management, and the use of its Aladdin platform. In 2020, the Federal Reserve hired BlackRock to manage its corporate bond purchasing programs. The institution managing retail investors passive equity holdings was simultaneously executing monetary policy on behalf of the US government, while holding positions in the very bonds it was buying on the government's behalf. The 1929 banks were selling to clients what they knew was risky. BlackRock is not doing that. But, it is operating at the intersection of private asset management, corporate governance, regulatory advice, and central bank operations in a way that no other institution has done since the structures Glass-Steagall was designed to prevent.
Here is the scale dimension, because the 1929 comparison only becomes precise when you understand how much larger BlackRock's position is than anything that existed in 1929. National City Bank, at its 1929 peak, had approximately $2 billion in assets. It was enormous by the standards of its era. It influenced a significant portion of the American securities market.
BlackRock manages $11.5 trillion.
Its Aladdin risk management platform tracks over $20 trillion in assets for outside clients, pension funds, insurance companies, sovereign wealth funds, who license the platform to manage their own portfolios. This means BlackRock does not simply own a significant portion of the market. It manages the risk models that a significant portion of the market's other major players use to make their own decisions.
When the same platform is modeling risk for both BlackRock's own funds and its external institutional clients, there is an information relationship between the manager and the managed that has no equivalent in 1929's structure. The 1929 banks knew more about the securities they were selling than their clients did. BlackRock knows more about the risk characteristics of its external clients' portfolios than those clients may know themselves. The asymmetry runs in the same direction. The scale is different by orders of magnitude. Here is what the final asset grab actually looks like and why the title is descriptive rather than conspiratorial. In 1929, the asset grab happened at the crash. Banks that had been selling inflated securities to retail clients absorbed those assets at distressed prices when the clients were forced to sell. The grab was the consequence of a specific market structure, not a plan, an outcome.
BlackRock's asset accumulation is not happening at a crash. It is happening continuously through the mathematically inevitable consequence of passive investing at scale. Every dollar that flows into an index fund increases BlackRock's ownership of every company in that index proportionally. The ownership accumulation is automatic. It does not require a market crash to trigger it. It requires only continued inflows into passive investment vehicles.
The combined effect is this: The largest shareholder in the most important companies in the American economy is an institution whose beneficial owners have no meaningful visibility into how that ownership is being exercised. They cannot vote the shares. They cannot instruct the manager. They cannot even, in most cases, see the full list of what they own and how their ownership is being used.
The 1929 retail clients did not know their deposits were funding speculative security underwriting.
The 2025 index fund investors do not know their savings are funding the corporate governance decisions of every major American company simultaneously.
The mechanism is different. The information asymmetry between the institution and the beneficial owner is structurally equivalent. Here is why this matters beyond finance because the 1929 parallel points toward a specific policy failure that the current moment is reproducing.
Glass-Steagall was passed because Congress concluded that the 1929 banks' structural position created conflicts too fundamental to manage through disclosure or regulation alone.
The solution was structural separation.
You could not do both. The equivalent structural question for 2025 is whether an institution can simultaneously manage retail savings passively, vote the shares of every major corporation, provide risk advisory services to those corporations, and execute central bank policy without creating conflicts too fundamental to manage through disclosure or regulation alone.
The answer is not obvious.
BlackRock's defenders argue that passive management is specifically designed to minimize conflict. The fund buys the index mechanically without active stock selection, without proprietary information use.
The argument is technically accurate and structurally incomplete. Passive ownership is not passive governance.
Owning the shares means voting the shares. Voting the shares is not passive.
The 1929 banks argued that their securities affiliates were legally separate from their commercial banking operations. The legal separation was real. The economic relationship, depositor money funding the securities operation, was also real.
Glass-Steagall concluded that legal separation was insufficient when the economic relationship created the conflict. This channel exists to find the structure before the Pecora investigation.
Ferdinand Pecora did not investigate the 1929 banks until 1933, 4 years after the crash.
His investigation documented what the structure had actually done, not what it could theoretically do. What it actually did. The Glass-Steagall Act was the policy response to documented evidence of a structural problem that had already produced a catastrophe. The structural question about BlackRock does not require a catastrophe to be worth asking.
The 1929 structure was worth questioning before October 1929.
The questions were not asked publicly until 1933. The Aladdin platform is documented. The share ownership is published in SEC filings. The 2020 Fed advisory role is in the public record.
The structural position is visible. The question of whether it creates conflicts equivalent to the ones Glass-Steagall addressed is a question that regulation has not yet forced anyone to answer publicly. Subscribe if you want to keep watching the structure before the investigation.
And I want your argument in the comments. Glass-Steagall solution to the 1929 conflict was structural separation.
You cannot be both a commercial bank and an investment bank. What would the equivalent structural solution look like for an institution that spans passive asset management, corporate governance, risk advisory, and central bank operations? And is structural separation still the right answer when the conflict runs through information rather than capital? Drop your argument below. The clearest one gets pinned.
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